One of my students found several ways to make the equation true for any number, so that you could use 100 or 1,456,918 and it would still be true:
9/3(1x + 2) + 4x = 7X + 6
6/3(2x + 4) + 1x = 5x + 8
6/2(1x + 3) + 4x = 7x + 9